Saw-jointer



(No Model.)

W. A. HUNTER.

SAW JdINTER.

Patented Apr. 9, 1889.

MWE/VTOH WITNESSES:

ATTORNEY UNITED STATES PATENT FFICE.

SAW-JOINTER.

SPECIFICATION forming part of Letters Patent No. 401,277, dated April 9,1889.

Application filed October 5, 1888. Serial No. 287,316. (No model.)

To all whom it Hwy concern.-

Be it known that I, \VESLEY A. HUNTER, a citizen of the United States ofAmerica, residing at Idaho Springs, in the county of Clear Creek andState of Colorado, have invented certain new and useful Improvements inSaw- Jointers, of which the following is a specification, reference beinghad therein to the accompanying drawings.

My invention relates to an improved construction and arrangement of adevice termed a saw-jointerthat is, a device for bringing the cuttingends of the teeth of a saw into the same line or plane.

As is well known, it is often necessary and generally desirable insharpening saws to joint them-that is, cut away any ends of teethprojecting beyond the general toothline, bringing the ends of all theeeth into one straight line, that each may ct equally upon the materialto be cut. Sucliflointing, however, is, when done by hand, the filebeing held directly in the hands, a very delicate operation, requiringcareful and steady manipulation and a good eye, so much so thatconsiderable care, trouble, and time are involved. Some forms ofjointers have been proposed for this purpose in which a file wassecurely held between fixed sides, adjustable gage or guide pi ces beingsupported between the fixed sides to guide the saw as it wasreciprocated over the file. There is an objection, however, toreciprocating the saw over the file, as must be done in such type of jointer, arising from the fact thatitis difiicult to reciprocate manuallya body the length of an ordinary saw in a perfectly-straight line, therebeing a tendency to reciprocate the edge in a curved line, to obviatewhich great care, attention, and skill are necessary.

The object of my invention, therefore, is to provide a simple compactdevice adapted to be grasped in the hand and manually reciprocated overthe edge of a saw firmly clamped and held stationary, by which it may beper fectly jointed without the need of any especial training or theexercise of any especial care or delicacy in manipulation, and by theuse of which perfect alignment of the teeth ends may be securedautomatically, so to speak-a device readily used, durable, and reliable;to whichends the invention consists in the features and arrangementsmore particularly hereinafter described and claimed.

In the drawings I have illustrated two embodiments of my invention,unitary in principle and general construction and differing only inminor details.

In the drawings, Figure 1 is a top or plan View of one form; Fig. 2, anend view'thereof; Fig. 3, a perspective view of another form; Fig. 4, atop or edge View, and Fig. 5 a face view of a detail of Fig. 3.

In the figures the reference-numerals 1 2 indicate the sidesor mainframe-pieces of the jointer. They are secured together so as to be fixedrelatively to each other and ata little distance apart by the connectorsor clamps 3 3, each having a recess, 4, in its face next the sidepieces, 1 2, in which recesses may be secured the file 5, so that itsface lies over the space between the sides 1 2. Set or binding screws 66 take through the. connectors 3 3 and upon the file, so that the lattermay be held firmly in position and yet be capable of ready detachmentfrom or securement in its seat.

In the space between the sides 1 2 is secured a sliding intermediategage block or piece, 7, against one side of which take the ends ofadjusting-screws 9 9, seated in one of the main sides 1, so that whenthe jointer is placed upon the saw, with the inner face of the filelying upon the teeth thereof, the piece 7 may be moved up by the screws9 9 to such distance as just permits easy movement of the bladebetweenthe gage block or piece '7 and side 2, the upper parts of thefaces of which are beveled or flared outwardly, as shown at 11, to givetherea-t an increased space to accommodate the set of the saw.

These general features of construction are the same in both forms, andthe description thus far given applies to both. It is necessary that theintermediate gage-piece, 7,

should be secured between the sides 1 2 and IOO In the other form theintermediate gage-piece, 7, has at its ends rearwardly-extending tonguesor lugs 10 10, moving in corresponding recesses in the ends of the sidepiece 1, attaining the same results, the intermediate gage block orpiece being secured in position in both forms by attached guide-rods.

In practice it is preferable that the recesses 4 be somewhat Wider thanthe files to be used, when the file may be moved to change the portionof its face lying over the space between side 2 and gage-piece 7 and todistribute the wear over its face.

In operation, the saw being fixed toothed edge up in any suitable viseor clamp by which it may be firmly held, the gage-piece 7 is retracteduntil the space between it and.

side 2 is sufficient to permit the jointer to be placed upon the saw. Itis then moved for- Ward until the space is just sufficient to permit thejointer to be'moved along the sawblade without binding or undue frictionthereon. The 3' ointer is then reciprocated along the edge, the filetaking upon the teeth ends, and extending, as it does, over many teeth,bringing their ends into perfect alignment. At the same time, as thefile is held rigid and at a right angle to the sides, and as they aremaintained parallel to the blade, the filing is at a true right angle tothe web of the blade. Thus perfect jointing is secured, and that withoutextraordinary skill or care.

Having thus described my invention, what I claim is 1. A saw-jointeradapted to be grasped in the hand and reciprocated over the edge of aIVESLEY A. HUNTER.

WVitnesses:

Z. F. WILBER, R. M. lVlCDERMOTT;

